Resawing-machine.



G. M. PELTON. RESAWING MACHINE. APPLICATION FILED JULY 25, 1910.

1,109,012. Patented Sept. 1,1914.

3 SHEETSSHEET l.

i L m 'grlr v :IF- IIEIIIHJ l mtnesses:

HE NORRIS PITI'ERS 00.. PH07D-UTHO. WASHINGTON. D. l:

G. M. PELTON. RESAWING MACHINE. APPLICATION FILED JULY 25, 1910.

Patented Sept. 1, 1914.

3 SHEETSSHEET 2.

Inventor:

attorneys Wit ass es W24 Wm THE NORRIS PETERS CO. PHOTULITHO..WASHINGTON, D. C.

' G'. M. PELTON. RESAWING MACHINE. APPLICATION FILED JULY 25, 1910.

1,109,012, Patented Sept. 1, 1914.

3 SHBETSSHEET 3.

Invent 01*,

min/886 66! v peg; PM @AJDMA THE NORRIS PETERS c0. PHOTILLITHQ,WA.-1INGTON, D. C.

UNITED STATES PATENT OFFICE. i

GEORGE M. PELTON, 0F MILWAUKEE, WISCONSIN, ASSIGNOB. TO THE FILER &STOWELL COMPANY, OF MILWAUKEE, WISCONSIN, A CORPORATION OF WISCONSIN.

RESAWING-MAGHINE.

Specification of Letters Patent.

Patented Sept. 1, 1914.

Application filed July 25, 1910. Serial No. 573,726.

To all whom it may concern:

Be it known that I, GEORGE M. PELTON, a citizen of the United States,residing at Milwaukee, in the county of Milwaukee and State ofWVisconsin, have invented certain new' and useful Improvements inResawing- Machines, of which the following is a specification, referencebeing had to the accompanying drawing, forming a part thereof.

This invention relates more particularly to horizontal band resawingmachines.

Its main objects are to provide such machines with positive and reliablemeans for feeding lumber of irregular shape or varying dimensions, suchas slabs and cants, as well as lumber of different thickness ordimensions to the saw; and generally to improve the construction andoperation of machines of this class.

It consists in the construction, arrangement and combination of parts ashereinafter particularly described and defined in the claims.

In the accompanying drawings like characters designate the same parts inthe several figures.

Figure 1 is a side elevation of a horizontal band resawing machineembodying the invention; Fig. 2 is a front elevation of the machine asviewed from the left with relation to Fig. 1; Fig. 3 is a plan view andhorizontal section on the line 3 3, Fig. 1;

and Fig. 4 is a vertical section on the line 4 4, Fig. 2, showing one ofthe toothed feed wheels with the gear train and one of the swinging armsassociated therewith.

Referring to Figs. 1, 2 and 3, 1 and 2 are the band wheels mounted onshafts 3 and 4, which are supported by boxes 5 and 6 carried by arms 7and 8 projecting laterally from the pedestal or base section 9 of theframe. The boxes 6 are pivoted on the underside to the outer ends ofslides 10 fitted in the tubular arms 8 and have up wardly projectingarms 11 to which are pivoted the outer ends of horizontal bars orcompression members 12 of a saw straining or tension device.

The inner pointed or knife-edge ends of the members 12 engage withundercut shoulders in a horizontal shaft 13 parallel with the band wheelshafts, as shown in Fig. 2. Tension bars 14 fastened at their outer endsto the slides 10, are formed at their inner ends with pointed orknife-edged hooks which engage with undercut shoulders in the oppositeside of the shaft '13 from those with which the compression members 12engage.

A weighted lever 15, fixed on the shaft 13, tends to turn the boxes 6outward on their pivot connections with the slides 10 and thus subjectsthe saw, indicated by the broken' line 16 on Fig. 2, to the requisiteworking strain or tension.

The slides are adjusted in or out to compensate for variations in thelength of saws and to render the above described straining, or tensionmechanism effective, by means of screws 17 working in nuts in saidslides and having fixed bearings in the arms 8. These screws areprovided at their inner ends with bevel gears 18, which mesh withsimilar gears 19 and 20, on a'shaft 21, parallel with the band wheelshafts 3 and 4. The gear 19 is fixed on the shaft 21, but the gear 20 isloosely mounted on said shaft and is rigidly connected with a clutchmember 23. The other clutch member 24 is keyed or otherwise fastened onthe shaft 21 and is formed or provided with a ratchet Wheel 25. handlever 26 is loosely mounted on the shaft 21 next to the ratchet wheel25, and is I s0-- A,

provided with a double toothed reversible pawl or dog 27 pivoted theretoin position to work with said ratchet wheel. Either tooth of said pawlis held in yielding engagement with the ratchet wheel by a spring 28,the pawl being reversed by hand so that by rocking the lever 26 to andfro, the shaft 21 and the screws 17 may be turned in either directionfor moving the band wheel 2 in or out as desired.

In order to adjust one end of the band wheel shaft 4 in or out, or tochange the alinement of said shaft and thus train the band wheel 2 sothat the saw will run properly, one of the screws 17 may be thrown outof gear with the shaft 21. For this pur-- pose a sliding rod 31 isfitted in-an axial bore in the outer end of the shaft 21, to connect anddisconnect the clutch members 23 and 24.

The lumber is guided and fed to the saw on a vertically adjustablesupport below and parallel with the plane of the upper side of the saw.This support comprises a bed 33, pivot-ally connected with and carriedby crank arms 34 on transverse rocker shafts 35, which have bearings instandards 36 and 37 extending upwardly from the pedestal or base section9 of the frame. The bed 33 is formed or provided adjacent to the ends,with side guides 38, to which are fastened, as shown in Fig. 2,vertically adjustable bearings 39, and in these bearings are mountedparallel with the rocker shafts 35, shafts 40, on which are mounteddrums or sprocket wheels 41. On these sprocket wheels or drums ismounted an endless belt consisting of link belts 42 and cross slats 43,fastened at intervals to said belts, the cross slats running upon thesprocket wheels or drums just inside of the link belts, as shown in Fig.2. The rocker shafts 35 are provided at one end with crank arms 44,whichare connected by a rod 45 so that they will move together, and bothends of the bed 33 and the traveling support will be raised and loweredsimultaneously to the same extent. The opposite end of the front rockershaft 35 is provided with a hand lever 46, which has a latch 47 workingwith a notched quadrant or are 48 for determining the adjustment of thebed and traveling support and locking and holding them in adjustedposition. The

lever has an adjustable connection with the rocker shaft, as indicatedin Fig. 1 for varying the adjustment of the bed and traveling supportbetween the notches of the quad-' rant or are 48, and also for turningthe lever down out of theway, to permit, the removal of the saw from theband wheels.

Above the saw in the standards 37 and overhanging arms 49 thereof, aremounted parallel with the bed 33 and saw 16, shafts 50, each of which isprovided with a series of gears 51 and at one end with pulleys 52 whichare connected by a belt, as shown in Fig. 1, so as to be rotatedtogether at the same speed. Upon the shafts are pivotally mounted oneach side of the several gears 51, swinging arms 53, which arepreferably madeof triangular form, as shown in Figs. 1 and 4. Betweenthe several pairs of arms at the lower or free ends thereof, arerotatably mounted toothed feed wheels 54, each of which is preferablyformed, as shown in Figs. 2 and 4, with two toothed rims 55 and anintermediate open toothed gear 56, which is connected by an idle gear 57carried by the arms with the associated driving gear 51 on the shaft 50.The openings between the teeth of the gears 56 prevent their becomingclogged with sawdust or other foreign matter. Each of these feed wheelsis movable up and down with the swinging arms 53 independently of theothers, and is connected by a rod 58 with a stop bar 59 parallel withthe'associated shaft 50, and connected adjacent thereto with the frameby radius arms 60. The rods 58 are pivoted at their lower ends to thearms 53, and pass loosely through openings in the stop bars 59, or havesliding connections therewith. At their upper ends the rods 58 areprovided with springs 60 bearing at their lower ends on said bars and attheir upper ends against nuts or adjustable spring seats 61 and servingas cushions or elastic stops to arrest the downward movement of the feedwheels. The two stop bars 59 are connected on each side of the machineby links 62-, and these links are connected on each side of the machinewith arms 62 on a rocker shaft 63 which is provided with a lever 63,having a latch 64 which works with a notched quadrant or arc 65 forraising and lowering the stop bars 59 and locking them in adjustedposition to determine the lower limit of movement of the several feedwheels.

One set of feed wheels 54 is located in front of the saw and the otherbehind it, as shown in Fig. 1, the arms 53 extending normallyrearwardand downward from the shafts 50, as shown in Fig. 1. The feedwheels being turned by the intermediate gears 57 in the same directionas the driving gears 51, as shown by arrows on Fig. 4, will readily riseand fall with the arms 53 to pass over knots or other irregularities inthe contour of the lumber with which they work without undue strain ontheir supporting and driving connections, since the upward movement ofthe arms 53 around the driving gears of itself tends to turn the feedwheels in the opposite direction to that in which they are turned bysaid driving gears 51. The rear shaft 40 of the traveling support isprovided with a pulley 66, and in line therewith the rear shaft 50 isprovided with a pulley 67. A counterweighted lever 68, pivotally mountedon the rear shaft 40, carries adjacent to the pulley 66 an idle pulleyand belt tightener 69, as shown in Fig. 1. A shaft 70 carried bybearings at the upper ends of arms 71 on a rocker shaft 72, which hasbearings in brackets on the rear side of the frame, is provided with apulley 73 and a friction wheel 74. The pulleys 66 and 67 are driven fromthe pulley 73 by a single belt passing around the vertically yieldingidle pulley 69, thus admitting of the vertical adjustment of thetraveling work support or table without affecting its operation. 011 therear end of the tubular band wheel shaft 3 is mounted a friction drivingwheel with which the friction wheel 74 is arranged to work, as shown inFigs. 1 and 3. The

rear end it is swiveled in the bearing 77, which also encircles the.shaft 7 O and ispro' vided with a pinion not shown meshing with the rack76. At its frontend said rod is connected with a hand lever 81 by whichthe shaft 7 O is moved toward and from the friction driving wheel 75 tocarry the fric tion wheel 74 into and out of engagement therewith. Aspring 82 interposed between the lever 81 and a nut or adjustableshoulder on the rod 79, provides for a yielding or elastic engagementbetween said friction wheels 74 and 7 5. The lever 81 is locked inposition to hold the friction wheels in engagement by means of aclamping screw 83 working with a curved arm 84 projecting from thehollow post or standard 85. In the standard 85 a vertical shaft ismounted, and this shaft is connected at its lower end by bevel gearswith the rod? 9, one of these I gears 88 being feathered on said rod asshown in Fig. 8 so as to permit of the endwise movement of the latter.The shaft 86 is provided at its upper end with a hand wheel or crank 89for turning it and for shifting the driven friction wheel 7 4 toward andfrom the center of the driving friction wheel 7 5 and thereby varyingthe speed of the feeding mechanism hereinbefore described, thisadjustment of the friction wheel 74: being effected by the rotation ofthe rod 7 9 and its connection with said wheel.

It will be observed that by the construction and arrangement of theparts of'the machine as herein shown and described, all the levers bywhich the operation of the machine is controlled are located within easyreach of the operator at the front sideof the machine. I

The shaft of the hand wheel 89 and hence the friction wheel 7 4i aresecured in any de-- sired position by a locking screw .90 threaded inthe upper end of the 'post85. The shaft 3 is provided with a pulley 91for driving the band wheels and saw, and at each side of the frame onthe standards 37 are mounted guides 92 by which the saw is held on theupper side in its true working plane.

From the foregoing description of the construction and arrangement ofparts their operation will be obvious to those skilled in the art towhich the invention pertains.

Various changes in details of construetion and arrangement of parts maybe made without departure from the principle and scope of the invention.

Iclaim: j g 1. In a resawing machine the combination withahorizontalband sawand axsupport on which lumber is. fed thereto, of ashaft.

located above and parallelwith the work ing side of the sawand'provid'ed with gears, arms pivotally mounted concentric with said ishaft, toothed feed wheels mounted on, said arms and movable therewithindependently of one another toward and from said sup-,

port, gears connecting said wheels with the gears on said shaft, a stopbar arranged above said arms and parallel with saidshaft and adjustabletoward and from said support, and stop rods pivoted to said arms andhaving sliding connections with the stop bar so as to limit the downwardmovement of the several feed wheels. 2. In a resawing machine thecombination with a horizontal band saw and a supe port on which lumberis fed thereto, of a shaft located above and parallel with the workingside of the saw and provided with gears, arms pivotally mountedconcentric with said shaft, toothed feed wheels mounted on said arms andmovable therewith independently of, one anothertoward and from said v Isupport, gearsconnecting said wheels with the gears on said shaft, astop bar arranged above said arms and. parallel with said shaft andadjustable toward and from said support, stop rods pivoted to said armsand having sliding connections with said bar, a lever connected withsaid stop bar and adapted to shift the same up and down, and meansdifferent positions.

3. In a resawing machine the combination. 1

with a horizontal band saw and a support on which lumber is fed thereto,of a shaft 10- cated above and parallel with the working side of thesaw, and provided with gears,

arms pivotally mounted concentric with said shaft, toothed feed wheelsmounted on said armsand movable therewith independently of one anothertoward and from said support, gears connecting said wheels with thegears on said shaft, an adjustable stopbar connected by radius arms withthe machine frame adjacent to said shaft, means for position, and stoprods pivoted to the'feed wheel arms and having sliding connections fwith said bar.

4. Ina resawing machine the combination with a horizontal band saw and asupport on which lumber is fed thereto, of shafts located above saidsupport parallel with the working side of the saw, and provided withgears, arms pivotally mounted concentric 100 I for locking said lever tohold said bar 'in Q 115 locking and holding said bar in adjusted I withsaid shafts, toothed feed wheels mount- I ranged parallel With saidshafts and (2011- In wifin'sswhereqf I hereto aflifi myignectecl withthe machine'ifmme adjacent nafiure i'n presence oftwo-witnesses.theretoby'radius arms stoprodconnectin 1 l the feed wheel arms vithsaicl bars, and all; GEORGE E 5 adjusting lQVGP- connected with saidstop Witnessesfl 1 bans andv proviclecl witlmmeztnsforlocking @HAS;LG'oss -FRANK BENNETT.

Copiesofthis patent may be obtained for five cents ea li bj ad'dresslngthg "Qo min lss i'oner of Patents, l Washingtom'D; 0;" v

